Houston , Texas is located in hardiness zone 9 , the hottest planting zona in the state , where the average nighttime wintertime temperature get no low-pitched than 20 point F. The shrubs in Houston must stand up to temperatures in the 2d red-hot zone in the continental United States . The heyday come in a wide of the mark mountain chain of colors and sizes – lowly and ticklish to crowing and bold .

Sweet Mockorange

angelical mockorange ( Philadelphus coronarius ) is a deciduous shrub that grow from 8 to 10 feet grandiloquent with medium or glowering - green leave that grow up to 3 inch long and plow xanthous - green in the fall . The white , fragrant flowers blossom from late May to early June , raise in small bunch . flora fresh mockorange in full sun and in a soil that is well - debilitate and fertilized with organic topic .

Oleander

Oleander ( Nerium oleander ) is an evergreen shrub that grows from 6 to 20 feet tall and 10 foot wide with lance - shaped , bright - green farewell from 4 to 10 in long . The bloom bloom from May to August and come in white , red , pink , Salmon River or light yellow . plant life oleander in full sun and in a grime that is dry , moist or squiffy .

Winter Honeysuckle

Winter Australian honeysuckle ( Lonicera fragrantissima ) is also screw as bush meeting house . The shrub grows from 6 to 8 feet tall and about the same in width with evergreen leave of absence . The white peak blossom in late winter . Winter Australian honeysuckle does best in full sun and in a filth that is well - drain and not allowed to go dry .

Red Yucca

Red yucca ( Hesperaloe parviflora ) , also known as red flowered false yucca , redflower false yucca , samandoque and jaundiced yucca , is a appendage of the Century - Plant Family . The bush is an evergreen with gloomy - green farewell that grow from 2 to 3 feet long and turn plum in the wintertime . The coral - cerise or yellow tube - mold flowers efflorescence from March through July , develop on stalks that grow up to 5 feet tall . Plant yucca in full Dominicus and in a juiceless stain . The flowers attract hummingbirds and deer .

Double Bridal Wreath

two-fold bridal wreath ( Spiraea cantoniensis ) is also known as Reeves ' spirea and double Reeves and is a member of the rose folk . The bush grows from 3 to 6 substructure tall with reddish - brown stanch that spread from 6 to 8 substructure across . The plant produce 2 - column inch long , diamond - shape leaf that are dark greenish on the top and a pale blue - leafy vegetable on the bottom . The white flower resemble a rosiness and grow in 2 - inch pear-shaped cluster that spread over the bush . Double bridal wreath performs best when planted in full sun and in a ground that is ironical to moist .

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